84351984 has 40 divisors (see below), whose sum is σ = 218392272. Its totient is φ = 28055040.

The previous prime is 84351983. The next prime is 84351997. The reversal of 84351984 is 48915348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84351983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23322 + ... + 26694.

Almost surely, 2^84351984 is an apocalyptic number.

It is an amenable number.

84351984 is an abundant number, since it is smaller than the sum of its proper divisors (134040288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84351984 is a wasteful number, since it uses less digits than its factorization.

84351984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905 (or 3899 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 84351984 is about 9184.3336176339. Note that the first 3 decimals coincide. The cubic root of 84351984 is about 438.5627761023.

The spelling of 84351984 in words is "eighty-four million, three hundred fifty-one thousand, nine hundred eighty-four".